Determination of slip resistance of pedestrian surfaces - Methods of evaluation

2021 ◽  
2019 ◽  
Vol 126 (6) ◽  
pp. 771
Author(s):  
Н.А. Наволокин ◽  
Н.В. Полуконова ◽  
Д.А. Мудрак ◽  
А.М. Мыльников ◽  
М.А. Барышникова ◽  
...  

The possibilities of using fluorescent research methods and their advantages for visualization and determination of the type of programmed cell death of human tumor cells under the action of flavonoids in experiments in vitro were investigated. The object of the study were the tumor cells of cervical cancer HeLa and A498 kidney carcinoma, the flavonoid containing extract of hedge hyssop (Gratiola officinalis L.) was used for testing in the experiments. The following fluorescent methods were used: the "living and dead" test with double staining - - iodide propidium and acridine orange, the method of double staining with annexin and iodide propidium. The confirmation of autophagy induction was performed using Muse cell analyzer with fluorescent reagents MuseAutophagy LC3-Antibody Based Kit. The application of fluorescent staining methods using double staining with acridine orange and iodide propidium in the "living and dead" test compared to phase microscopy allows to visualize the formation of apoptotic cells and autophagosomes in cells and, therefore, can serve as one of the methods of evaluation screening of the effectiveness of various chemotherapy drugs.


2001 ◽  
Vol 7 (4) ◽  
pp. 276-280 ◽  
Author(s):  
Friedel Peldschus

Investigations into the multi-criterion evaluations have been performed for different purposes for more than 30 years. Nevertheless, up to now there are no common rules how to apply multi-criterion methods of evaluation and how to interpret their results. But the solutions of the problem must be found. The investigations are based on the joint programme LEVI developed by the VGTU and the Leipzig HSTEC. In accordance with the programme, for solving the problem a matrix is created in which all solution variants are evaluated by the same criteria. For the transformation of initial data different methods are used. Besides, the problem solution may be oriented to a choice of a variant and the determination of an optimal sequence or to the determination of the rational behaviour balance of two adversely interested groups. The maximisation, minimisation and mixed problems are distinguished. In case of the last mentioned problems the meanings may be unsuitable and expressions about the maximisation or minimisation too strong. When solving the problem of maximisation by different transformation methods, similar curves are obtained and the results are not dispersed heavily. In case of the minimisation, when solving according to different transformations, a considerable deviation of results has been noticed. The investigations also disclosed that solutions may vary depending on the optimisation goal. Dispersion of results in case of minimisation is stronger than in case of maximisation. When analysing different transformations, the vectorial transformation is regarded as “neutral” and there is no sense to include it into comparison. In case of the minimisation problem, linear transformations should be investigated in a more detailed way.


2006 ◽  
Vol 127 (4) ◽  
pp. 34-43
Author(s):  
Stanisław ANTAS

The article presents the analysis of a commonly used performance modification method for turboprop and turboshaft engines with a free power turbine. The description of analytical and numerical methods of evaluation for a change of parameters and geometry of turbine assemblies are presented. There are also given the basic methods of changing throat area of turbine nozzle guide vanes and its influence on engine performance. The calculation methods are verified by experimental tests run by WSK “PZL-Rzeszów” S.A.


2017 ◽  
Vol 17 ◽  
pp. 332-338
Author(s):  
R. B. Kaplin ◽  
O. V. Аnishchenko

Share value as a security is a money equivalent of its definite investment qualities and management possibilities which depends on concrete goals and methods of evaluation. Determination of the market value of enterprise shares may be realized by estimation which is carried out by an estimator who has the corresponding qualification certificate of the State Property Fund, or by carrying out forensic examination which is fulfilled by forensic experts having corresponding qualification certificates of the Ministry of Justice of Ukraine and entered in the Register of certified forensic experts. After abolition of an expert speciality 16.1 «Estimation of integral property complexes, equities, securities» by the order the Ministry of Justice of Ukraine in June, 2016 the demand in expert researches on determination of the value of enterprises stocks has not disappeared, on the contrary, the quantity of appeals on performing such researches has increased. At the present time «The technique of comprehensive expert studies of determination of the enterprises shares value» in the co-authorship of experts-economists and experts on building and technical researches (to whom qualification of the forensic expert on speciality 16.1 was earlier conferred) is developed. This technique is registered in the Register of techniques on performing forensic examinations of the Ministry ofJustice of Ukraine. The complex of methodical approaches, methods and evaluation procedures serve as the methodical basis for stocks evaluation. All these demands from the expert of application during the research of considerable extent of special knowledge on the issue and circulation of such securities, as well as about the features of business accounting, taxation and the operations, realized with them. The particularity of researching of the operations with securities is the necessity of comprehensive consideration of the problems related with circulation that makes up the subject both forensic economic examination and forensic evaluative examination.


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